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HDAT2 4.51 Harddisk Repair Utility

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#1 Emiel Wieldraaijer

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Posted 27 August 2006 - 10:09 AM

HDAT2 is program for test or diagnostics of ATA/ATAPI/SATA (SATA with NCQ) and SCSI/USB devices.
It will not execute in a DOS session under Windows. You should make a DOS boot floppy disk or CD-ROM and boot your system for it and execute this program from that floppy disk or CD-ROM.
HDAT2 program has 2 levels:

Drive level testing
- main function is testing and repair (regenerates) bad sectors for detected devices
- you get many information about detected devices

File level testing
- read/find/check items (MBR, boot, directories, etc.) of file system FAT12/16/32
- check/remove (regenerates) bad sectors records, flags in FAT table

Development of real mode versions of HDAT2 is finished/stopped.


fully implemented commands: SET MAX, SET SECURITY, Device Configuration Overlay
device access with interrupt 13h, direct via ATA ports, with ASPI drivers
detects ATA/ATAPI/SATA/SATA with NCQ devices with on-board and add-on controller cards
detects USB devices via USB ASPI driver only
detects SCSI hard drives via INT13h or ASPI drivers
other SCSI devices are detected via ASPI drivers only (must be loaded before);
with ASPI drivers you got more informations about SCSI devices
test and repair device for bad sectors
many different test-functions for hard drives
resize hard drives which supports SET MAX ADDRESS/EXT
(supports 28/48-bits LBA addressing modes)
drive lock detection via security feature (Security Menu)
S.M.A.R.T. functions for ATA/SATA and SCSI/USB drives only
informations about devices (ATA/ATAPI, INT13h, ASPI)
sector viewer for devices (also for ZIP, CD-data discs)
to access ATA/SATA CD-ROM drive you don't need any driver or MSCDEX
enable/disable some features for direct-access devices
Device Configuration Overlay (DCO) feature set
(you can restore a full capacity or allow/disallow some feature sets of hard drive)

Download From http://www.hdat2.com/

#2 Moon Goon

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Posted 06 September 2006 - 02:12 AM

HDAT is a wonderful program. Compares very well to the not-so-free HDD Regenerator. One thing about both programs is that sometimes in "repairing" the HDD they will induce S.M.A.R.T. errors that make the drives show up as failing - your drive may be "fixed" but now S.M.A.R.T. reports it as bad forever.

@Emiel: How did you determine it was not free for business use - only personal use? On the web site it states:


You can use it AS-IS (freeware).

I don't want to prove you wrong but I'd really like to use this at work :P Just wondering..

#3 Emiel Wieldraaijer

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Posted 06 September 2006 - 07:53 PM

@Moon Goon

I didn't know for sure .. so i reported it as "Free for Personal Use"


#4 Emiel Wieldraaijer

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Posted 19 September 2006 - 08:21 PM

Version 4.5.2 is out

#5 Emiel Wieldraaijer

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Posted 30 April 2007 - 07:16 PM

versionb 4.5.3 is out

#6 ragjaws

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Posted 21 January 2010 - 08:07 PM

Is there a tutorial on HDAT2??

#7 BrentNewland



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Posted 30 April 2010 - 02:47 AM

The only thing that you really need to do special with HDAT2 is add the following line to autoexec.bat:


That way it loads the program automatically instead of having to run it manually.

Not a real big thing, but a strange oversight by the program author.

#8 Nuno Brito

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Posted 21 August 2011 - 05:07 PM

Hi Emiel, can we have your tool listed on the downloads portal?


#9 Wonko the Sane

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Posted 21 August 2011 - 06:09 PM

Since I doubt that a Czech guy named Lubomir Cabla :worship: will use a Dutch nick such as Emiel Wieldraaijer :dubbio: ;) I presume that Emiel is not the Author, and that he simply was so kind as to post a link to this nice program :thumbsup: letting boot-land reboot.-pro members know about it :).



Last version: 4.8.1 16.07.2010

BTW HDAT2 has it's own Forum here:


#10 Emiel Wieldraaijer

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Posted 25 January 2012 - 07:23 PM

Hi Wonko,

You are correct, i'm not the author .. and i'm dutch

Hdat2 is really nice



#11 laddanator


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Posted 26 January 2012 - 12:11 AM

Kinda confused. I would like to give this a try but is it really useful if

tests in version 4.8.1 are still disabled.


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